论文标题
高保真状态制备和用I> 1/2的离子超纤维量子的测量
High fidelity state preparation and measurement of ion hyperfine qubits with I > 1/2
论文作者
论文摘要
我们提出了一种使用核自旋高于$ i = 1/2 $的离子超蛋白局来实现高保真状态制备和测量（垃圾邮件）的方法。这些较高的核自旋同位素的基态无法提供简单的频率选择状态制备方案。我们通过在频道镜上驱动强和弱的过渡，使用偶极转变和狭窄的微波或光学四极杆转变来衡量这种局限性。我们用$ i = 3/2 $ isotope $^{137} \ mbox {ba}^+$演示了这种方法量子计算的波长和质量。
We present a method for achieving high fidelity state preparation and measurement (SPAM) using trapped ion hyperfine qubits with nuclear spins higher than $I = 1/2$. The ground states of these higher nuclear spin isotopes do not afford a simple frequency-selective state preparation scheme. We circumvent this limitation by stroboscopically driving strong and weak transitions, blending fast optical pumping using dipole transitions and narrow microwave or optical quadrupole transitions. We demonstrate this method with the $I=3/2$ isotope $^{137}\mbox{Ba}^+$ to achieve a SPAM infidelity of $\left(9.0 \pm 1.3\right) \times 10^{-5}$ ($-40.5 \pm 0.6$ dB), facilitating the use of a wider range of ion isotopes with favorable wavelengths and masses for quantum computation.
